ASTM A325M is a metric high-strength heavy hex structural bolt designed for steel-to-steel connections. Manufactured from medium carbon or alloy steel and subjected to quenching and tempering, it features a minimum tensile strength of 830 MPa. The bolt is characterized by a larger head for increased bearing surface and a shorter thread length to ensure the shear plane passes through the stronger unthreaded shank. Available primarily as Type 1 (carbon steel) and Type 3 (weathering steel), it is typically paired with A563M nuts and F436M washers for use in buildings, bridges, and industrial infrastructure.
Product Data
Specification
Size
Diameter
Length
1/2’’-13x11/4’’
1/2
11/4
5/8’’-11x11/4
5/8
11/4
7/8’’-9x11/4
7/8
11/4
1/2’’-13x11/2’’
1/2
11/2
5/8’’-11x11/2
5/8
11/2
3/4’’-10x11/2’’
3/4
11/2
1/2’’-13x11/2’’
1/2
11/2
5/8’’-11x11/2’’
5/8
11/2
1/2’’-13x13/4’’
1/2
13/4
Applications
Building Insulation: Primarily used in the installation of thermal insulation systems in residential, commercial, and industrial buildings.
External Wall Insulation: Often used in External Thermal Insulation Composite Systems (ETICS) to fix insulation boards to external walls.
Roof Insulation: Suitable for securing insulation materials on roofs to enhance energy efficiency and thermal performance.
Floor Insulation: Utilized in floor insulation systems to prevent heat loss through the flooring and improve overall energy efficiency.
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